PK_EDGE_vertex_type_t    


typedef int PK_EDGE_vertex_type_t;


This datatype indicates the closure state of an edge.


Values can be:

   PK_EDGE_type_open_c        The edge has two distinct vertices.
   PK_EDGE_type_closed_c      The edge has the same vertex at its start
                              and end.
   PK_EDGE_type_ring_c        The edge has no vertices.